Third-person singular present tense of 'extol'—praises enthusiastically or excessively.
Same root as 'extolls' from Latin 'extollere.' Both spellings (extol/extoll) are used, though 'extol' is more common in modern English.
English is messy about double-L spelling—'extols' with one L and 'extolls' with two L are both correct, which confuses lots of people trying to spell it right.
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